Partial Symbolic Pattern Databases for Optimal Sequential Planning

نویسندگان

  • Stefan Edelkamp
  • Peter Kissmann
چکیده

This paper investigates symbolic heuristic search with BDDs for solving domain-independent action planning problems cost-optimally. By distributing the impact of operators that take part in several abstractions, multiple partial symbolic pattern databases are added for an admissible heuristic, even if the selected patterns are not disjoint. As a trade-off between symbolic bidirectional and heuristic search with BDDs on rather small pattern sets, partial symbolic pattern databases are applied.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Improving Cost-Optimal Domain-Independent Symbolic Planning

Symbolic search with BDDs has shown remarkable performance for cost-optimal deterministic planning by exploiting a succinct representation and exploration of state sets. In this paper we enhance BDD-based planning by applying a combination of domain-independent search techniques: the optimization of the variable ordering in the BDD by approximating the linear arrangement problem, pattern select...

متن کامل

Symbolic Pattern Databases in Heuristic Search Planning

This paper invents symbolic pattern databases (SPDB) to combine two influencing aspects for recent progress in domain-independent action planning, namely heuristic search and model checking. SPDBs are off-line computed dictionaries, generated in symbolic backward traversals of automatically inferred planning space abstractions. The entries of SPDBs serve as heuristic estimates to accelerate exp...

متن کامل

External Symbolic Heuristic Search with Pattern Databases

In this paper we propose refinements for optimal search with symbolic pattern databases in deterministic statespace planning. As main memory is limited, external heuristic search is combined with the power of symbolic representation. We start with an external version of symbolic breadth-first search. Then an alternative and external implementation for BDDA* to include different heuristic evalua...

متن کامل

Symbolic Shortest Paths Planning

This paper studies the impact of pattern databases for solving shortest path planning problems with limited memory. It contributes a bucket implementation of Dijkstra’s algorithm for the construction of shortest path planning pattern databases and their use in symbolic A* search. For improved efficiency, the paper analyzes the locality for weighted problem graphs and shows that it matches the d...

متن کامل

Flexible Abstraction Heuristics for Optimal Sequential Planning

We describe an approach to deriving consistent heuristics for automated planning, based on explicit search in abstract state spaces. The key to managing complexity is interleaving composition of abstractions over different sets of state variables with abstraction of the partial composites. The approach is very general and can be instantiated in many different ways by following different abstrac...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008